Quote:
Originally Posted by Rick323
You are going farther with your new tires, than your worn old tires.
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Tread depth on the new tires is 12/32". Worn is at 5/32", for a difference in radius of 7/32".
Calculated diameter new: 31.6"
Calculated diameter old: 31.2"
That's a difference of a little over 1%, while that could account for some of it, it's not the only reason.